mouse.cpp

#include <drivers/mouse.h>

using namespace hardware;
using namespace drivers;

void print(uint8_t* str);
void setCursorPosition(uint8_t newx, uint8_t newy);

void MouseEventHandler::onMouseDown(uint8_t button) {}

void MouseEventHandler::onMouseUp(uint8_t button) {}

void MouseEventHandler::onMouseMove(int x, int y) {}

MouseDriver::MouseDriver(InterruptManager* interruptManager, MouseEventHandler* events)
:dataport(0x60),
 commandport(0x64),
 InterruptHandler(interruptManager, 0x2C) {

  offset = 0;
  buttons = 0;
  x = 0;
  y = 0;

  eventHandler = events;

  eventHandler->onMouseMove(x, y);

}

void MouseDriver::activate() {

  commandport.write(0xA8);
  commandport.write(0x20); // command 0x60 = read controller command byte
  uint8_t status = dataport.read() | 2;
  commandport.write(0x60); // command 0x60 = set controller command byte
  dataport.write(status);

  commandport.write(0xD4);
  dataport.write(0xF4);
  dataport.read();

}

uint32_t MouseDriver::handleInterrupt(uint32_t esp) {

  uint8_t status = commandport.read();
  if (!(status & 0x20))
    return esp;

  buffer[offset] = dataport.read();
  offset = (offset + 1) % 3;

  if(offset == 0) {
    if(buffer[1] != 0 || buffer[2] != 0) {

      x += buffer[1];
      if(x >= 80) x = 79;
      if(x < 0) x = 0;
      y -= buffer[2];
      if(y >= 25) y = 24;
      if(y < 0) y = 0;

      eventHandler->onMouseMove(x, y);
    }
  }
  return esp;

}